Fix uv pip install -r /dev/stdin#16855
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charliermarsh merged 1 commit intoastral-sh:mainfrom Nov 26, 2025
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which was broken in uv 0.9.12 by astral-sh#16805 : ``` $ echo "flask" | uv pip install -r /dev/stdin warning: Requirements file `/dev/stdin` does not contain any dependencies Audited in 8ms ```
charliermarsh
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zanieb
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…data scripts" (#16861) Reverts #16805 / #16744 This also invalidates - #16855 - #16857 There's probably a way we can make this work, but detecting whether a file is safe to read repeatedly is non-trivial, `is_file` returns `true` for `/dev/stdin` on macOS so the approach from #16857 is not sufficient. I spent a while trying to add `is_char_device` detection for macOS but unfortunately that didn't work.
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Summary
Fix
uv pip install -r /dev/stdinwhich was broken in uv 0.9.12 by #16805 .Example of the issue:
Note that "upstream"
pip installdoes support-r /dev/stdinand doesn't support-r -.Test Plan
2 new tests added.